<md-nav-list>
  <h3 md-subheader>项目</h3>
  <md-list-item>
    <md-icon md-list-icon svgIcon="projects"></md-icon>
    <span md-line>项目首页</span>
    <span md-line md-subheader>显示您的所有项目</span>
  </md-list-item>
  <h3 md-subheader>工具</h3>
  <md-list-item>
    <md-icon md-list-icon svgIcon="month"></md-icon>
    <span md-line>月视图</span>
    <span md-line md-subheader>按月查看任务</span>
  </md-list-item>
  <md-list-item>
    <md-icon md-list-icon svgIcon="week"></md-icon>
    <span md-line>周试图</span>
    <span md-line md-subheader>按周查看任务</span>
  </md-list-item>
  <md-list-item>
    <md-icon md-list-icon [svgIcon]="today"></md-icon>
    <span md-line>日视图</span>
    <span md-line md-subheader>按天查看任务</span>
  </md-list-item>
</md-nav-list>